Yep, that big black burnt soot mark is more than likely the coil's chosen carbon pathway to ground.
if you dont feel like waiting for the replacement, simply get a small wire brush, scrub the heck out of it and wipe it clean with some rubbing alcohol... then after it dries, snap it on and fire it up.
it's also a good "first check" to make if you ever start suffering from a rough idle / backfiring out of the blue.
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